I was recently given the gift of a Karcher FJ6 foam attachment and a 5l bottle of BH Autofoam. It goes without saying that this made me happy but I'm struggling to get a creamy foam that sticks to the car and doesn't run off after 60 seconds.

So far I've tried various combinations of the following with little success:

- the recommended BH dilution
- a weaker foam dilution
- a stronger foam dilution
- adding in a bit of Meguiars gold class shampoo
- hot and cold water in the foam bottle
- hot and cold water through the pressure washer
- all manner of twiddling the knob on to of the attachent

I live in south Wales and we have good soft water here so I doubt that could be flattening the mixture.

Any tips would be greatly appreciated. Next time I'm able I'll grab a photo of what my foam looks like currently.

Auto foam is designed to be a thin foam that breaks down, it cleans as the bubbles break down. Sorry the foam lance you have is pretty useless I had one replaced it shar**** so that will not help you create the desired effect, I suggest a replacement lance should help, if you want a thick foam try auto finesse avalanche and a clean your car PA foam lance.

I've got one of these Karcher attachments and it works OK with Autosmart Actimousse provided it is turned up to maximum. When using the BH Autofoam, so as not to annoy the neighbours, I use a 5l pump sprayer as recommended on here. I might splash out on a better foam gun eventually but I probably spend too much on this stuff as it is.